And william



(No Model.) 2 Sheets-Sheet l. W. H. EOKERT 8v W. H. GREGORY.

CONDUCTOR FOR HOUSE LIGHTING.

1YR-442,57.. Patented Dec. 9, 1890 /w Nv .U h.

@nov/Www W #A 1;/ @il f7 Tn: mams paens co., wom-umu., wAsmNmoN, DA c.

(No Modem 2 sheets-sheen '2.

W. H. ECKERT &W.H.IGREGORY.

. GOND'UUTOR POR. HOUSE LIGHTING. K

1\T0.4L1Z,-575. Patented Dec. 9, 1890.

"m ai Ill/00111,

0 @13 lthai/t, futon/121g nu: mams News no., moreurno.. msnmuww, n. c.

' which the following isa specification.

WILLIAMl n. EOKERT,

PATENT OFF-1er. i

Or ,New YORK, ANDwILLiAM n. GREGORY, or BROOKLYN, NEW YORK.

fooNpUoi-ORFOR HOUSE-LIGHTING.

SPECIFICATIO forming part of Letters Patent No. 442,575, dated December `9, 1890. l

applicationnaarmate15,1s9o. sei-inno. 364,943. (romain.)

To all "whom it may concern: y

' Be itknown that \ve,VILLIAM H. ECKER'T, of the city, county, 'and State of New York, and lWILLIAM H. GREGORY, of Brooklyn, countyof Kings, State of New York, both citizens of the United States offAmerica, have made 'a new and useful Improvement in Conductors for Hous'efLighti'ng, or for other purposes requiring a distribution of electric cur rents among the apartments of abuilding, of

v It is the objectof our invention to effectually separate'the conductors of a system o'n'e-romA the others', and to place each of them in-a position well rprote'ctedfron'i all danger of -accidental contact. 1'l`o -t-his end we surround a wire with an insulating-tube, preferably of fire-proofmaterial, whose hollow space is of much greater diameter than the conductor itself, thus .insulating it not only by the walls of the pipe, but by a wide air-space as well.

In carrying our invention into practice we prefer to permanent-ly build the conductors into the pipes, thus avoiding the difficulty of drawing wires into longtubes after they have been placed within the walls of buildings or other inaccessible positions.

Figurel of the drawings represen ts a single length of pipe with its conductor inserted. Fig. 2 represents a means of joining the sections of pipe together. Fig. 3 is a curved pipe-section. Fig. 4 represents a modiiied form of coupling. Fig. 5 illustrates a means of joining a conductor with the metallic heads which are placed one in each end of a pipe-section. Fig. 6 is a modification of the arrangement shown `in Fig. 5. Fig. '7 shows our improved form of conductor as applied to a form of union-box which we employ in distributing a current to different parts of a house.

A conductor b is centrally placed in a tube or pipe a of fire-proof insulating material, and

is there held by insulating-plugs c, the latter }drawn inward by the longitudinal displaceginent of wire b, to which they are'attacheol. @To effect electricalcontact, core hisprovided with a female and core h with a male screw, `andfis screwed within c until d and g are i brought into' contact witheach other. flat ends of the two sections are thenbrought together; but to give the conductor greater strength and rigidity a collarvk is screwedl over threaded parts 'ij to form a rigid joint. In FiglE we have shown an arrangement .which is well adapted to vertical piping inl whichwe dispense with the collar 7a, employ# ing instead a bell-shaped end Z for one section, within which the end of the adjoining .section is inserted. y

' Instead of joining a conductor?) with a core It,

as shownin Figs. 2, 3, and 4, we find it preferable to pass the wire longitudinally through plug c, there making it fast by means of a screw s, as seen inA Fig. 5. A still better arrange#v ment is shown in Fig. 6, in which a metallic core is tightly driven into plug c, while the latter is in turn driven into the end of pipe ct, and in like manner 7i is driven into c and c into the end of the other section of pipe. Conductor b, after passing through c, is securely clamped by nut y, while the conductor of the other section is attached to h by to2. In order that the pipe ends may come into close contact, h must be placed within c a sufficient distance to entirely inclose nut y. With this arrangement the male screwg may be turned within w, thus forming an inexpensive and strong joint.

In Fig. 7 we show two tubes t q-a long and a short one-for making each loop connectionrto and from the union-box, the conductors within tubes .e being joined with a common conductor s, placed within one compartment of the box, while wires t; within tubes t extend to a second compartment, within which is a common conductor t. The two conductors of each loop are carried in separate pipes a a, and are joined, respectively, to the entering tubes t q of the box, as already described. In this case, however, we use a collar k, reaching around both pipes to secure the joint. To maintain the best insulation, the wire within the tube should be 'They IOO kept as dry as possible, and to this end the plugs c are made practically air-tight. If an embedded conductor were used and a part of its coating were to become moist or wet, a leak would ensue and the covering would soon be destroyed. Where, however, an airspace is employed between the pipe and the conductor, no such difficulty can arise, for then no current could pass to the pipe even if the latter were Wet. It is also obvious that by thus building a conductor in sections any part may be removed and replaced upon the discovery of a defect at any point without in any manner disarranging more than a few feet of its length.

What we claim, and desire to secure by Letters Patent, is-

1. A conductor for house-wiring or other similar purposes, made in sections, each section consisting ot an insulating-tube having end plugs, a centrally-arranged wire Whose diameter is much less than the bore of the tube arranged therein, metallic heads placed Within said plugs, to which the central Wire is connected, one of said heads being provided with a male and the other With a female screw, whereby parts of the conductor may be removed by unscrewing one section from another.

2. A conductor for house-wiring or other similar purposes, made in sections, each section consisting of an insulating-tube, a single interior conductor placed within said tube, and plugs and central metallic heads placed therein,to which the conductor is joined, and a male and female screw formed Within and upon said metallic heads in the ends of ad joining pipe-sections.

3. A conductor for house-wirng or other similar purposes, made in sections, each section consisting of an insulating-tube, an interior conductor, and means for joining contiguous sections, consisting in end plugs having central metallic heads or cores provided with male and female. screws, substantially as described, said cores being rigidly connected to the electrical conductors of the tubes.

4. A conductor for house-wiring or other similar purposes, made in sections, each being formed of a centrally-arranged conductor, a pipe having end plugs and metallic contacts, said contacts consistin gin centrally-arranged metallic cores with which the Wire is joined,l

a male and female screw formed within or upon said cores at each joint, and a pipecoupling within which the ends of adjoining tube-sections are inserted.

5. A conductor for house-wiring or other similar purposes, made in sections, a centrallyarranged conductor, and a pipe of insulating material having end plugs c c', the latt-erbeing provided with centrally-arran ged metallic cores h h', one having a male and the other a female screw, and a conducting-Wire b, substantially as described.

6. In a pipe-joint for electric conductors, the combination of insulating-plugs c c', cores h 71.', male screw g, female screw w, nut fy, fastening-screw wz, conducting-wires b, and pipe-sections a, substantially as described.

WILLIAM H. ECKERT. WILLIAM I-I. GREGORY. Witnesses:

WM. ARNoUX, JOHN C. SANDERS. 

